How Trucking Detention Pay Works and How to Document It

Detention pay is the money a carrier or owner-operator is owed when a shipper or receiver holds the truck at the dock beyond the agreed free time. It exists because a truck that isn't rolling isn't earning — and the driver didn't cause the delay.

The catch: detention is almost always a contractual term, not something automatically owed by law. Whether you get paid comes down to two things — what your rate confirmation says, and whether you can prove your times. This guide covers both.

The basic mechanics: free time, the clock, and the rate

A typical detention arrangement has three parts. First, free time: a window at the dock — commonly two hours per stop, though it varies by broker and contract — during which no detention accrues. Second, the clock: detention starts when free time expires, measured from your arrival (usually your on-time arrival for the scheduled appointment) until you're loaded or unloaded and released with signed paperwork. Third, the rate: a dollar amount per hour after free time, negotiated in the rate confirmation or the broker-carrier agreement.

Two details trip people up. Billing increments: some agreements pay in exact minutes, some round to 15- or 30-minute blocks, and some only pay full hours — the same delay can be worth noticeably different amounts depending on which method applies, so know yours before you invoice. And appointment status: many brokers only honor detention if you arrived on time for a scheduled appointment. Show up late, or roll into a first-come-first-served facility, and the free-time clock may be treated differently or the claim denied outright.

Tip Read the detention terms on every rate confirmation before you accept the load, not after you've been sitting for three hours. If detention terms aren't spelled out, ask the broker to add them in writing. A verbal 'we'll take care of you' is not a term.

Why detention claims get denied

Brokers and shippers deny detention claims for predictable reasons, and almost all of them are documentation gaps rather than disputes about whether you actually waited:

No proof of arrival time — you say 08:00, the facility's records say 08:40, and you have nothing dated to back your version.
No in/out times recorded on the bill of lading or a facility sign-in sheet.
Late arrival for the appointment, which voids detention under many agreements.
Notice not given — many rate confirmations require you to alert the broker before or as free time expires, not after the fact.
Claim submitted too late. Detention terms often include a submission window; miss it and the claim can be rejected regardless of merit.
Invoice math that doesn't match the agreement's billing increment, which gives the payer an easy reason to kick it back.

Notice deadlines deserve special attention. A common pattern is that the carrier must notify the broker while still at the facility — often as free time is about to lapse — so the broker can contact the shipper. If your agreement has that clause and you skip the call or message, you may have signed away the claim even with perfect time records.

How to document detention so it holds up

Treat every dock visit as if you'll need to prove the timeline later. The habit costs a couple of minutes; a denied claim costs the whole check.

On arrival, timestamp it: send the broker or dispatcher a quick message ('Arrived at receiver, 07:55') the moment you check in. A sent message is a dated, third-party-visible record.
Get on the facility's record: sign the gate log or check-in sheet if there is one, and note the name of whoever checked you in.
Photograph the check-in: a phone photo of the sign-in screen, gate ticket, or lumper receipt captures a time you didn't write yourself.
As free time is about to expire, notify the broker in writing that detention is starting — this satisfies typical notice clauses and starts the paper trail.
At release, get in and out times written on the BOL and signed. If the facility refuses, note the refusal and message the broker your out time immediately.
Invoice promptly with the times, the math shown line by line, and copies of the messages, BOL, and photos attached.

Tip Your ELD log corroborates your story — it shows when the truck stopped moving and when it left — but most brokers want the BOL times and your contemporaneous messages as the primary evidence. Use the ELD as backup, not as your only record.

Calculating what you're owed

The math itself is simple: total time at the facility, minus free time, times the hourly rate, applied in the agreed billing increment. Say you arrived at 08:00, left at 13:10, free time is two hours, and the rate is per hour in 30-minute blocks. Total time is 5 hours 10 minutes; detention time is 3 hours 10 minutes; in 30-minute blocks that bills as 3.5 hours. Multiply by the rate and that's the invoice line.

Where people lose money is doing this from memory days later, mixing up increments, or never invoicing at all because the amount 'probably isn't worth the hassle.' Small unclaimed detention amounts add up across a year of loads — which is exactly why keeping a running log of claimed and unclaimed detention is worth it.

Detention documentation checklist (every stop)

Rate confirmation read: free time, $/hr, billing increment, notice deadline
Arrival message sent to broker/dispatch with timestamp
Facility gate log or sign-in sheet signed
Photo of check-in ticket, sign-in screen, or lumper receipt
Written detention notice sent when free time expired
In and out times written and signed on the BOL
Departure message sent with out time
Invoice submitted within the agreement's claim window, math shown

Print this page or save it to your phone — the checklist works on paper.

Common questions

Is detention pay required by law?

Generally no — for most freight it's a contract term between you and the broker or shipper, not a statutory entitlement, though rules can vary by jurisdiction and freight type. That's why the rate confirmation language and your documentation matter so much: they're usually the entire basis of the claim.

When does the detention clock actually start?

Under most agreements, free time starts at your check-in for an on-time scheduled appointment, and detention starts when free time expires. Check your specific agreement — some start free time at the appointment time rather than arrival, and late arrivals are often treated differently.

What if the facility won't write in/out times on the BOL?

Document the refusal: note who refused, message your broker the times immediately so there's a dated record, and lean on your gate photos, sign-in records, and ELD data. A contemporaneous written trail from multiple sources is hard to dismiss even without BOL times.

Should I bother invoicing small detention amounts?

Yes. Beyond the money itself, a consistent pattern of documented, invoiced detention gives you leverage in rate negotiations and flags which shippers and receivers to price higher or avoid. Track unclaimed amounts too — it tells you what the habit of not invoicing actually costs.